- #1

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## Homework Statement

i) Find the Image and Kernel of A = (2,1)(-4,-2) (where each bracket is a row).

ii) Calculate A

^{2}and use i) to explain your result.

## Homework Equations

None

## The Attempt at a Solution

So I can do everything up to the very last bit (i think anyway).

i) The Kernel = (1,-2) = Image.

ii) A

^{2}=

__0__but this is where I don't know what to say. How do I use part i) to explain the 0 matrix found?